Question

Van't Hoff's isotherm is used to relate:

• A. Enthalpy and entropy
• B. Heat of reaction and pressure
• C. Equilibrium constant and temperature
• D. Fugacity and activity

Hint:

Van't Hoff's isotherm is a key equation in chemical thermodynamics, especially for understanding how the equilibrium constant changes with temperature. It is commonly used in reactions involving gases and solutions.

Answer 1

The Correct Option is C

Van't Hoff's isotherm is a thermodynamic equation that relates the equilibrium constant of a reaction to the temperature. It is derived from the principles of chemical equilibrium and the effect of temperature on the reaction equilibrium. Specifically, it shows how changes in temperature can influence the value of the equilibrium constant. This is particularly useful in understanding the temperature dependence of reaction equilibria.
- Enthalpy and entropy: While enthalpy and entropy are related to Gibbs free energy, they are not directly related to Van't Hoff's isotherm.
- Heat of reaction and pressure: This is not the focus of Van't Hoff's isotherm; it deals with the equilibrium constant.
- Fugacity and activity: These are related to chemical potentials and non-ideal gases, not directly connected to Van't Hoff's isotherm.
Thus, Equilibrium constant and temperature is the correct answer.